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| author |   Andrii Nakryiko <andriin@fb.com> | 2019-10-11 15:01:45 -0700 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2019-10-12 16:15:10 -0700 |
| commit | 3fbe31ae7ec4ec284a908cef7218f19e951ee55b (patch) | |
| tree | 532c0a4a4df8b4102fe1351900a13b985557dcf0 /tools/testing/selftests/bpf/Makefile | |
| parent | Merge branch 'samples-cross-compile' (diff) | |
| download | linux-dev-3fbe31ae7ec4ec284a908cef7218f19e951ee55b.tar.xz linux-dev-3fbe31ae7ec4ec284a908cef7218f19e951ee55b.zip | |
selftests/bpf: Enforce libbpf build before BPF programs are built
Given BPF programs rely on libbpf's bpf_helper_defs.h, which is
auto-generated during libbpf build, libbpf build has to happen before
we attempt progs/*.c build. Enforce it as order-only dependency.
Fixes: 24f25763d6de ("libbpf: auto-generate list of BPF helper definitions")
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20191011220146.3798961-2-andriin@fb.com
Diffstat (limited to '')
| -rw-r--r-- | tools/testing/selftests/bpf/Makefile | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index 40552fb441e5..f958643d36da 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -256,7 +256,8 @@ ifeq ($(DWARF2BTF),y) $(BTF_PAHOLE) -J $@ endif -$(OUTPUT)/%.o: progs/%.c +# libbpf has to be built before BPF programs due to bpf_helper_defs.h +$(OUTPUT)/%.o: progs/%.c | $(BPFOBJ) ($(CLANG) $(BPF_CFLAGS) $(CLANG_CFLAGS) -O2 -target bpf -emit-llvm \ -c $< -o - || echo "clang failed") | \ $(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@ |